Read the docs
TI-2026-35879 Aliases CVE-2026-48519GHSA-v5ff-9q35-q26f

Langflow: Unauthenticated RCE in Shareable Playgrounds

Priority HIGH 76CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, the "Shareable Playground" (or "Public Flows" in code) contains a critical RCE vulnerability. Shareable Playground feature works by enabling the execution of workflows by unauthenticated users, by accessing a link. Specifically, it enables the route /api/v1/build_public_tmp to execute any public flow, given a public flow ID. When the route executes the flow, it allows for providing arbitrary custom Python code as the nodes code, inside the JSON payload. The vulnerable field is data.nodes[X].data.node.template.code.value. This vulnerability is fixed in 1.9.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00783 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed langflow (langflow-ai): 1.9.2langflow (PyPI): 1.9.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Langflowlangflowbefore 1.9.21.9.2Patch availableCNA
—langflow (PyPI)before 1.9.21.9.2Patch availableGHSA-v5ff-9q35-q26f
  • langflow VendorLangflow Affected before 1.9.2 Fixed in 1.9.2 Patch available CNA
  • langflow (PyPI) Vendor— Affected before 1.9.2 Fixed in 1.9.2 Patch available GHSA-v5ff-9q35-q26f

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*before 1.9.2VulnerableLangflow
  • cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:* Versions before 1.9.2 Vulnerable ·Langflow

Remediation

  • Fix · CNA langflow (langflow-ai) Fixed in 1.9.2
  • Fix · GHSA-v5ff-9q35-q26f langflow (PyPI) Fixed in 1.9.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48519
  2. 2026-10-03 Alias added: GHSA-v5ff-9q35-q26f

References

Exploit 1

Advisory 1

Other 2

  • TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-00553 Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote… KEVCVSS 3.0CRITICAL 9.8
  • TI-2025-24427 Langflow <= 1.6.9 CORS Misconfiguration to Token Hijack & RCE KEVCVSS 4.0CRITICAL 9.4
  • TI-2025-02845 Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-25463 Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint KEVCVSS 4.0CRITICAL 9.3
  • TI-2026-39928 Authorization bypass in langflow KEVCVSS 3.1HIGH 8.4
See all 216 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences